But recent research suggests they're a brain booster as well, and not just because they help the circulation system that pumps oxygen to your head.
但是最近的研究表明，它也是脑力提升者，这不仅仅在于它帮助循环系统向大脑输送氧气。
The world's first closed-loop engine, with thrust of about 7 tons and using liquid oxygen and carbon-hydrogen propellant, was installed in booster L.
世界上第一台可提供7吨推力的闭合回路液氧碳氢推进剂发动机被安装到L助推器上。
The world's first closed-loop engine, with thrust of about 7 tons and using liquid oxygen and carbon-hydrogen propellant, was installed in booster L.
世界上第一台可提供7吨推力的闭合回路液氧碳氢推进剂发动机被安装到L助推器上。
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